Samsung GT-S5830 - Audio Working; Speaker Working

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Level
3
Repair
8-11
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8-3-4.
Audio Working

Speaker Working
Operate speaker
NG
Check
Speaker
Connector
Reconnect
NO
YES
Speaker break
down?
Change Speaker
Signal on in
L513, L514?
Resolder
L513,L514
SPK ASSY
YES
NO
Signal on in
C406, C407?
Resolder
C406, C407
Replace U400
YES
NO
Change main PBA
NO
Resolder or
Replace UCP300
YES
NO